cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Mirmanto
Contact Email
dinamikateknikmesin@gmail.com
Phone
+6282111738971
Journal Mail Official
dinamikateknikmesin@gmail.com
Editorial Address
Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia
Location
Kota mataram,
Nusa tenggara barat
INDONESIA
Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
Published by Universitas Mataram
ISSN : 2088088X     EISSN : 25021729     DOI : https://doi.org/10.29303/dtm.v14i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Mechanical Engineering Physics
The Dinamika Teknik Mesin is a peer-reviewed academic journal which publishes originally research papers or simulation/computational articles in all aspect of Mechanical Engineering such as energy conversion, materials, design and production/ manufacturing. The Dinamika Teknik Mesin publishes in two issues per volume annually appearing in June and December. Due to administrative constraints, then starting in January 2018, the Dinamika Teknik Mesin publishes the volume and issue in January and July. However, starting in 2020, the Dinamika Teknik Mesin publishes issues in April and October due to the new administration.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 452 Documents
 28   29   30   31   32 
Advancements in PET bottle plastic slitting devices for raw material 3D printing filament production Utama, D.W.; Hagai, H.; Halim, A.; Chan, G.
Dinamika Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i1.988

Abstract

The world is facing a significant environmental challenge due to the accumulation of plastic waste, especially PET (Polyethylene Terephthalate) bottles. Indonesia is no exception to this problem. Every year, millions of tons of PET bottles are produced, and most of them end up as waste that takes a long time to decompose. This study aims to investigate the technical and engineering aspects involved in creating a slitting device for PET bottle plastic, which will be used as raw material for Fused Deposition 3D printer filament. The research will focus on overcoming the challenges associated with producing consistent and high-quality raw materials filament and exploring innovative solutions and advancements in filament material design. The slitting device is designed to produce plastic strips with a consistent width of 10 mm and a tolerance of ±1 mm, using easily accessible cutting blades. Ensuring a consistent strip width is crucial for producing 3D printing raw material filament with a diameter of 1.75 mm and a tolerance of ±0.05 mm. Two versions of the slitting design, version 1 and version 2, were tested, and improvements were made to reduce friction and optimize cutting efficiency, resulting in consistent strip width. The second version performed better, producing longer, more uniform strips with lower pulling force. These strips are then proposed to be processed for 3D printing filament, demonstrating the potential of this tool to transform PET bottle waste into valuable raw materials
Evaluation of the temperature of the rotary dryer with LPG fuel in drying cherry coffee Alit, I.B.; Susana, I.G.B.; Adhi, I.G.A.K.C.; Mulyanto, A.
Dinamika Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i1.968

Abstract

Utilization of rotary dryers with liquefied petroleum gas (LPG) energy sources as an alternative to solar drying, which is highly dependent on the weather. This dryer is applied to small farmers to dry cherry coffee. The results of the study showed that the drying temperature reached an average of 63.92oC to dry a sample of 10 kg of cherry coffee. From testing, this sample still produced a reasonably high outlet temperature of the drying chamber, which was an average of 62.07oC. From this condition, it is possible to increase the amount of cherry coffee to be dried, and further testing is needed. LPG-based rotary dryers are very easy for small farmers. The drying process can be carried out all the time because it does not depend on the weather. In addition, LPG in Indonesia for small farmers is still subsidized, so it is economically affordable. The shorter drying time than solar drying allows small farmers to carry out their production process sustainably. In 20 hours of testing, it was able to reduce the moisture content from 62.84% to 9.95%.
Influence of infill parameters on the tensile strength of ABS 3D printing filament Winsen, L.; Michel, J.; Putra, W.M.; Lubis, S.Y.; Siahaan, E.
Dinamika Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i1.949

Abstract

This study aims to analyze the effect of infill parameters on the tensile strength of Acrylonitrile Butadiene Styrene (ABS) filament in the 3D printing process for the manufacture of prototype cat prosthetics. ABS filament was chosen because it has good mechanical strength, resistance to high temperatures, and the ability to be further processed after printing. The infill parameters studied include infill percentage, layer thickness, and print speed. The research methodology involved making test samples with varying infill percentages, which were then tested using a tensile testing machine to measure the maximum tensile strength. The infill percentage was varied between 25%, 50%, 80%, and 100%. Tensile strength testing was conducted in accordance with ASTM D638 standards to determine the mechanical characteristics of the molded specimens and then the optimal infill parameters were applied in the design and manufacture of the cat prosthetic leg prototype, ensuring better load distribution and higher durability. The results show that the percentage density of infill has a positive correlation with the tensile strength of the specimen; an increase in infill density increases the tensile strength of the material. The findings provide practical guidance in the selection of infill parameters for tensile strength optimization in 3D printing applications using ABS filament so that it can be known that the influence of infill parameters greatly affects the strength of manufacturing.
Effect of using phase change material (PCM) magnesium sulfate (MgSO4) solution as heat storage in solar powered thermoelectric cooler box Priyuko, D.; Rifky, R.; Saputra, A.; Fahrezi, A.I.; Sobirin, M.I.
Dinamika Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i1.964

Abstract

Utilization of new, renewable energy sources is very important for society as a way to switch from fossil fuels. Solar energy is a type of renewable energy that is very promising for various applications. Traditional cooling systems contribute to the depletion of the ozone layer, requiring alternatives such as using thermoelectric solar energy (TEC) for cooling. In addition, PCM used, such as 25%, 30%, and 35% MgSO₄ solutions, can absorb latent heat during the cooling process, thereby increasing efficiency. This research aims to increase coefficient of performance (CoP) of cooling boxes by integrating solar energy and PCM. Data collection was carried out from 09.30 to 14.40, by measuring light intensity, voltage and current, solar panel temperature, environmental temperature, cooler box wall temperature and TEC temperature. Over three days of data collection, this study determined the minimum temperature and CoP for the cooler. The findings show that the minimum temperature in the cooler without PCM is 16.8℃. Coolers with PCM MgSO₄, 25%, 30%, and 35% the minimum temperatures are 16.7℃, 12.7℃, and 14.7℃. Regarding the average COP, the cooling box without PCM reached 0.0345, while the box with 25%, 30%, and 35% PCM MgSO₄ had a CoP of 0.0354, 0.0469, and 0.0402, respectively. The study concluded that 30% MgSO₄ PCM solution is most suitable for use as PCM, because it affects the minimum temperature and COP of the cooling system. This effectiveness is due to the concentration of MgSO₄ lowering the freezing point of the solution, thereby increasing the cooling performance.
Analysis of carbide tool wear during turning of aisi 4340 with variations in cutting speed Howard, A.; Rosehan, R.; Lubis, S.Y.
Dinamika Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i1.943

Abstract

 This research aims to analyze the wear value of carbide cutting edges when used in the process of cutting AISI 4340 workpieces using a lathe. AISI 4340 is an alloy steel that is often used in the manufacturing industry because of its high strength and wear resistance. However, cutting in these materials can cause significant wear on the tool blade, which can affect the performance and service life of the cutting tool. The experimental method was carried out using a conventional lathe and a carbide cutting tool suitable for cutting alloy steel. A series of cutting tests were conducted with varying cutting speeds, while keeping the depth of cut and feed rate constant. The cutting parameters are as follows: varying cutting speeds of 141 m/min, 220 m/min, and 351 m/min, with a constant feed rate of 0.16 mm/rev and a fixed depth of cut of 0.5 mm for all cutting speed variations. It is shown that the carbide tool wear of 0.3 mm is reached at different times of each cutting speed. Data obtained from cutting tests are used to analyze the level of wear on carbide cutting edges and the factors that influence it. It is hoped that the results of this research will provide a better understanding of the interaction between the carbide cutting edge and the AISI 4340 workpiece during the cutting process.
Effect of the addition of backing support plates on the shear strength of aluminium and steel adhesively bonded joints Putra, A.I.; Sugiman, S.; Catur, A.D.; Ahmad, H.
Dinamika Teknik Mesin Vol 15, No 2 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i2.1080

Abstract

The use of adhesive joints has been increasing in joining metallic and non-metallic materials due to advantages such as homogeneous stress distribution and a smooth surface appearance. This study aims to analyze the effect of support plates on the shear strength of aluminium and steel adhesively bonded joints. The position of the  support plates was studied within the overlap area. Experimental testing was carried out using single lap joint specimens per ASTM D1002. Finite element modelling was also carried out using Abaqus software to analyze the stress distribution in the adhesive layer. The experiment results showed that the addition of the support plates did not increase the shear strength of the joint, but instead tended to decrease it. The strength of aluminium joints with support plates at a distance of 3.125 mm from the end of the lap of the joint decreased by 62%, while the strength of steel joints decreased by about 38%. Finite element modelling results show that von Mises stress at the end of the lap joint decreased with the addition of support plates.
Evaluation of Thermal Comfort in Argo Lawu New Generation Train Using Transient CFD Simulation Ananta, F.; Saputra, T.J.; Fajarningrum, N.D.
Dinamika Teknik Mesin Vol 15, No 2 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i2.1125

Abstract

Thermal comfort is one of the key aspects in providing quality passenger service in railway transportation. This study aims to analyze the performance of the air conditioning system in the Argo Lawu New Generation train coach using time-based Computational Fluid Dynamics (CFD) simulation transient. The simulation was conducted on two air conditioning configurations: KA 1 (AC units at both ends of the coach) and KA 2 (a single AC unit at the center of the coach). The simulation process consists of three main stages: pre-processing, processing, and post-processing. It was performed for 180 seconds with a 1 second time interval to observe dynamic changes in temperature distribution, air velocity, and pressure. The results show that KA 2 provides a more uniform distribution of temperature and airflow, with a final average temperature of 24.8°C compared to 25.1°C in KA 1. The central placement of the AC unit proves to be more effective in maintaining balanced pressure and distributing cool air throughout the cabin. This transient CFD simulation offers a more realistic representation of the cooling system’s performance and serves as a reference for future train HVAC design improvements.
Oil based variation impact on fuel consumption of four-stroke 125 cc engine Ardiyanta, A.S.; Putra, E.R.
Dinamika Teknik Mesin Vol 15, No 2 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i2.1108

Abstract

Oil is one of the crucial components in the lubrication system of four-stroke engines, particularly in motorcycles. Generally, engine oil is categorized into mineral oil, semi-synthetic oil, and fully-synthetic oil. The purpose of this research is to examine the effect of different base oil types on fuel consumption. The research was conducted using an experimental method, with the independent variable being the type of base oil: mineral oil, semi-synthetic oil, and fully-synthetic oil. The dependent variable of this research is fuel consumption. A four-stroke engine with a 125 cc carburetor was used as the test engine. Each test was conducted in five times at an engine speed 2000 rpm. Data analysis was performed using repeated measures ANOVA. The results showed that the use of different base oil types had a significant effect on fuel consumption. The average of fuel consumption was approximately 9.4 mL/min for mineral oil, 8.2 mL/min for semi-synthetic oil, and 6.9 mL/min for fully-synthetic oil. It can be concluded, that fully-synthetic oil results in the lowest or the most efficient fuel consumption compared to both mineral and semi-synthetic oils.
Kaizen implementation to reduce dimensional defect in the welding process of Fender D155A-6R at PT Arkha Jayanti Persada Yana, I.G.B.E.P.; Setyawan, P.D.; Suartika, I.M.; Rachmalia, A.; Aziz, M.M.
Dinamika Teknik Mesin Vol 15, No 2 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i2.1158

Abstract

Kaizen is a concept of continuous improvement that emphasizes quality enhancement and efficiency in production processes. In this study, the Kaizen approach was applied to address dimensional defects in the welding process of the Fender D155A-6R component at PT. Arkha Jayanti Persada. The component, which was previously imported from Japan, is currently being tested through local production trials. Initial inspection indicated that 11 of 33 measurement points were out of tolerance, most of which were linked to welding activities. To analyze the problem, the PDCA (Plan, Do, Check, Act) cycle was employed. The investigation revealed several contributing factors: the absence of a locator to secure parts during welding, insufficient reinforcement that caused deformation, and the lack of a standardized welding procedure for operators. Corrective measures were then introduced, including the installation of a locator, additional reinforcements, and the establishment of a formal welding procedure. After two PDCA cycles, the dimensional issues were successfully resolved. The findings indicate that applying Kaizen through PDCA led to significant improvements in dimensional accuracy and product quality.
The effect of variations in vulcan concentration in agel-cotton rope as a reinforcement for ripoxy composites on thermal conductivity properties Suarsana, I.K.; Santhiarsa, I.G.N.N.; Tenaya, I.G.N.P.; Tarigan, A.R.F.; Triadi, A.A.A.
Dinamika Teknik Mesin Vol 15, No 2 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i2.1097

Abstract

Ripoxy composites reinforced with natural agel-cotton rope reinforcement have attracted attention in engineering material applications due to their mechanical properties and environmentally friendly waste. Vulcan chemicals, which are fillers or additives in the composite manufacturing industry, are believed to be able to improve the thermal properties of the composite. This study aims to examine the effect of vulcan chemical treatment on thermal conductivity in ripoxy composites reinforced with cotton rope. This test was carried out by soaking agel-cotton rope textiles in Vulcan solution for 1 hour with variations in solution concentration: 0%, 25%, and 50%. The printing of test specimens was carried out using a Vacuum Infusion printing tool, so that the printed specimen results were not contaminated by outside air. Thermal conductivity tests were carried out using the ASTM - D5470 standard. The test results that have been obtained, the 25% concentration variation has the smallest thermal conductivity value, with a value of 0.064 W / m°C at a temperature of 100° C and 0.171 W / m°C at a temperature of 200°C. Meanwhile, with a concentration variation of 50% the value increases because the greater the concentration of Vulcan given, the density of the composite material will increase, and higher concentrations can reduce the number of pores or voids in the composite which can usually inhibit heat flow.

Page 30 of 46 | Total Record : 452

 28   29   30   31   32 

Filter by Year

2011 2025


Reset
Filter By Issues
All Issue Vol 15, No 2 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 14, No 2 (2024): Dinamika Teknik Mesin Vol 14, No 2 (2024): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 14, No 1 (2024): Dinamika Teknik Mesin Vol 14, No 1 (2024): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 13, No 2 (2023): Dinamika Teknik Mesin Vol 13, No 2 (2023): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 13, No 1 (2023): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 2 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 2 (2022): Dinamika Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin, in progress Vol 11, No 2 (2021): Dinamika Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 9, No 2 (2019): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 9, No 2 (2019): Dinamika Teknik Mesin Vol 9, No 1 (2019): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 9, No 1 (2019): Dinamika Teknik Mesin Vol 8, No 2 (2018): Dinamika Teknik Mesin0 Vol 8, No 1 (2018): Dinamika Teknik Mesin0 Vol 8, No 2 (2018): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 8, No 2 (2018): Dinamika Teknik Mesin Vol 8, No 1 (2018): Dinamika Teknik Mesin Vol 8, No 1 (2018): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 7, No 2 (2017): Dinamika Teknik Mesin Vol 7, No 2 (2017): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 7, No 1 (2017): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 7, No 1 (2017): Dinamika Teknik Mesin Vol 6, No 2 (2016): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 6, No 2 (2016): Dinamika Teknik Mesin Vol 6, No 1 (2016): Dinamika Teknik Mesin Vol 6, No 1 (2016): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 5, No 2 (2015): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 5, No 2 (2015): Dinamika Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin Vol 4, No 2 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 4, No 2 (2014): Dinamika Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 1 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 1 (2012): Dinamika Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin Vol 1, No 1 (2011): Dinamika Teknik Mesin Vol 1, No 1 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin More Issue